On 16 October 2013 a court cancelled the registration certificate of Solidarity.[10] The party could have challenged this on appeal, but did not[10] and was legally eliminated on 31 December 2013 "due to lack of reporting".[17] and because for more than 10 years had not participated in any election.[10]

On 2 September, Vitaliy Kovalchuk, the parliamentary leader of the Ukrainian Democratic Alliance for Reform, stated that since his party and the Petro Poroshenko Bloc had agreed to joint participation in parliamentary elections on 29 March 2014, the two parties were in discussion about running a joint list at the October 26 parliamentary election.[23] On 15 September it became clear that 30% of the Petro Poroshenko Bloc election list would be filled by members of UDAR and that UDAR leader Vitali Klitschko is at the top of this list, Klitschko vowed not to resign as incumbent Mayor of Kiev.[24] According to political scientist Tadeusz A. Olszański (in mid-September 2014) this deal with UDAR "enables it to use that party’s large-scale structures, which the Poroshenko Bloc itself lacks".[25]

Party support (% of the votes cast) in different regions of Ukraine (in the 2014 election).

The party won the parliamentary election with 132 seats, beating the runner-up People's Front, who won 82 seats.[6] People's Front was first in the nationwide party vote (22.14% against 21.81%) but the party won 69 constituency seats while People's Front won only 18.[6] On 27 November 2014, the party formed a parliamentary faction of 145 people (at the opening session of the new parliament).[26]

On 27 August 2014 newly elected party leader Yuriy Lutsenko stated that the Petro Poroshenko Bloc should help Poroshenko implement his election promises.[27]

Although the party's leadership (Poroshenko and Lutsenko) comes from a centre-left and social democratic background, it is difficult to classify the party's ideology on a left-right spectrum. The party officially decries populism and advocates for pragmatism and realism.[28]

Privatizing all Ukrainian coal mines and liquidate or mothball all mines that cannot be privatized (and social support for the workers of the liquidated or mothballed mines and the population of these territories)[30]